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v3.26.1

INVESTMENTS - NARRATIVE (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2026 USD ($) loan mortgage_loan | Jun. 30, 2025 USD ($)
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Value of available for sale securities sold | $ 1,136.3 | $ 440.3 | $ 2,793.4 | $ 525.1
Amortized cost of fixed maturities that were non-income producing | 5.7 |  | 5.7 |
Carrying value of fixed maturities that were non-income producing | 3.4 |  | 3.4 |
Total fixed maturities, available for sale |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Gross realized losses on sales of fixed maturities, available for sale | (32.9) | $ (21.8) | $ (89.2) | $ (24.6)
Financial Asset, Past Due |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans noncurrent | loan |  |  | 40 |
Commercial Portfolio Segment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans in process of foreclosure | mortgage_loan |  |  | 0 |
Carrying value of loans | 1,883.0 |  | $ 1,883.0 |
Residential Portfolio Segment |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans noncurrent | mortgage_loan |  |  | 0 |
Residential Portfolio Segment | Financial Asset, Past Due |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Carrying value of loans | 29.2 |  | $ 29.2 |
Residential Portfolio Segment | Financial Asset, Past Due | Foreclosure |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Number of mortgage loans noncurrent | loan |  |  | 11 |
Carrying value of loans | 5.4 |  | $ 5.4 |
Total carrying amount | Residential Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | 1,490.3 |  | 1,490.3 |
Total carrying amount | Commercial Portfolio Segment | Commercial Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | 1,883.0 |  | 1,883.0 |
Total estimated fair value | Residential Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | 1,502.9 |  | 1,502.9 |
Total estimated fair value | Commercial Portfolio Segment | Commercial Mortgage |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Mortgage loans | $ 1,767.9 |  | $ 1,767.9 |

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